Question

In which of the following the dispersion medium is liquid?

• A. Emulsion
• B. Gel
• C. Aerosol
• D. Alloy

Answer 1

The correct option is A

Emulsion

The explanation for the correct option:

(a) Emulsion:

1. The media in which colloidal particles are disseminated is referred to as the medium of dispersion.
2. In emulsions, the dispersed phase is the liquid that is present in small amounts, while the dispersion medium is also a liquid that is present in vast amounts.
3. Example: Milk and face cream.

The explanation for incorrect options:

(b) Gel:

1. The gel is a system in which the dispersed phase is liquid and the dispersion medium is solid.
2. Example: Jelly and cheese.

(c) Aerosol:

1. Gas is the dispersion medium and liquid/solid is the dispersed phase in an aerosol.
2. Example: Mist and smoke.

(d) Alloy:

1. It is a solid sol.
2. The medium and the phase of dispersion of alloy are solid.
3. Example: Brass (mixture of copper and zinc).

Hence, option (a) is correct, In emulsions, the dispersed phase is the liquid that is present in small amounts, while the dispersion medium is present in vast amounts.